| #ifndef _NET_IPCOMP_H | 
 | #define _NET_IPCOMP_H | 
 |  | 
 | #include <linux/types.h> | 
 |  | 
 | #define IPCOMP_SCRATCH_SIZE     65400 | 
 |  | 
 | struct crypto_comp; | 
 |  | 
 | struct ipcomp_data { | 
 | 	u16 threshold; | 
 | 	struct crypto_comp * __percpu *tfms; | 
 | }; | 
 |  | 
 | struct ip_comp_hdr; | 
 | struct sk_buff; | 
 | struct xfrm_state; | 
 |  | 
 | int ipcomp_input(struct xfrm_state *x, struct sk_buff *skb); | 
 | int ipcomp_output(struct xfrm_state *x, struct sk_buff *skb); | 
 | void ipcomp_destroy(struct xfrm_state *x); | 
 | int ipcomp_init_state(struct xfrm_state *x); | 
 |  | 
 | static inline struct ip_comp_hdr *ip_comp_hdr(const struct sk_buff *skb) | 
 | { | 
 | 	return (struct ip_comp_hdr *)skb_transport_header(skb); | 
 | } | 
 |  | 
 | #endif |